The Garda Commissioner has admitted that the latest controversies facing the force are "totally unacceptable" and not in keeping with the standards of a modern police service.

It emerged on Thursday that thousands of court summonses were issued over a ten year period for offences that did not require them.

Official figures also revealed that almost one million roadside breath tests were recorded between 2011 and 2016 that never occurred.

Nóirín O'Sullivan has confirmed that new systems have been put in place to ensure that this cannot be repeated, the Commissioner also says she has written to the Policing Authority seeking an external review of the controls that are in place.